Finding the Fourth Proportional to 42,013.74, 57,978.30 and 23,151.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,013.74 : 57,978.30 = 23,151.54 : x
2. Step 2: Convert to fraction form
   42,013.74/57,978.30 = 23,151.54/x
3. Step 3: Cross multiply
   42,013.74x = 57,978.30 × 23,151.54
4. Step 4: Simplify right side
   42,013.74x = 1,342,286,931.58
5. Step 5: Solve for x
   x = 1,342,286,931.58/42,013.74
6. Step 6: Final answer
   x = 31,948.76